Mariana is 42 years old, and a member of the Chilean upper class that takes privilege for granted. Scorned by her father and neglected by her husband, Mariana occupies her days with fertility treatments, running an art gallery and learning to ride a horse. Her riding instructor, a former cavalry officer known as The Colonel, is under investigation for human rights abuses committed decades before. When Mariana grows closer to her enigmatic teacher, she's directly confronted with the outrages of the dictatorship for the first time, and her increasing interest threatens to tear down the invisible walls protecting her family from the past.
Democracy comes back to Chile during the summer of 1990. In an isolated community, Sofía (16), Lucas (16) and Clara (10), face their first loves and fears, while preparing for New Year's Eve. They may live far from the dangers of the city, but not from those of nature.